A-B1399541-AI ARRESTOR-SPARKOne New Aftermarket Replacement Spark Arrestor Fits Briggs & Fits Stratton Small Engines This aftermarket replacement spark arrestor installs on the exhaust muffler of Fits Briggs & Fits Stratton small engines to prevent the emission of burning carbon deposits and debris from the exhaust. Spark arrestors are required by law when operating equipment on USDA Forest Service and most other federally managed lands, making this a critical safety and